Original Instructions
Copyright DOOSAN 2012
Serial Number 1001 and Up
Serial Number 50001 and Up (Europe Only)
Shop Manual
DX255LC-3 Excavator
950106-00374E
April 2012
DOOSAN and the DOOSAN logo are registered
trademarks of DOOSAN Corporation in the United
States and various other countries around the
world.
Table of Contents
Page I
1Table of Contents
Safety
Track Excavator Maintenance Safety ................................................... SP002322
Specifications
Specifications for DX255LC-3............................................................... SP002547
General Maintenance
General Maintenance Instructions........................................................ SP002454
Standard Torques................................................................................. SP002404
Upper Structure
Cabin .................................................................................................... SP002324
Counterweight....................................................................................... SP002548
Fuel Tank.............................................................................................. SP002549
Fuel Transfer Pump (Option) ................................................................ SP002550
Swing Bearing....................................................................................... SP002329
Lower Structure and Chassis
Track Assembly .................................................................................... SP002551
Engine and Drivetrain
Engine Coolant Heater (Option) ........................................................... SP002328
Drive Coupling (Main Pump)................................................................. SP002586
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment ............... SP002597
Accumulator.......................................................................................... SP002455
Center Joint (Swivel)............................................................................. SP002456
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